How far open-weight models trail closed ones
- DeepSeek V4.1 Flash 1017
- 606
- Kimi K3.1 Pro
- 561
- Mistral Large 4
- 555
Rising on Hugging Face · read November 5
- New Ling 3.0 Tiny November 5
- New R ricursiveAI/Ripple-65B-Preview November 4
- New Hy4 November 4
- New S Crouton Alpha November 3
As of November 5, 2026, the best open-weight model, DeepSeek V4.1 Flash 1017, scores 159.31 on the Epoch Capabilities Index. A closed model first reached that score with OpenAI GPT-5.4 Pro, released March 5, 2026, 7 months before DeepSeek V4.1 Flash 1017 came out on October 17, 2026.
Current scores of models released by each month
| Month | Best closed model | Score | Best open-weight model | Score | Gap |
|---|---|---|---|---|---|
| November 2026 | OpenAI GPT-6 Astra | 169.1 | DeepSeek V4.1 Flash 1017 | 159.3 | 9.8 |
| October 2026 | OpenAI GPT-6 Astra | 169.1 | DeepSeek V4.1 Flash 1017 | 159.3 | 9.8 |
| September 2026 | OpenAI GPT-6 Astra | 169.1 | MoonshotAI Kimi K3 | 158.5 | 10.6 |
| August 2026 | Anthropic Claude Opus 5 | 164.4 | MoonshotAI Kimi K3 | 158.5 | 5.9 |
| July 2026 | Anthropic Claude Opus 5 | 164.4 | MoonshotAI Kimi K3 | 158.5 | 5.9 |
| June 2026 | Anthropic Claude Fable 5 | 164.2 | Z.ai GLM 5.2 | 153.0 | 11.2 |
| May 2026 | OpenAI GPT-5.5 Pro | 162.7 | MoonshotAI Kimi K2.6 | 151.6 | 11.1 |
| April 2026 | OpenAI GPT-5.5 Pro | 162.7 | MoonshotAI Kimi K2.6 | 151.6 | 11.1 |
| March 2026 | OpenAI GPT-5.4 Pro | 160.2 | MoonshotAI Kimi K2.5 | 148.7 | 11.5 |
| February 2026 | OpenAI GPT-5.2 Pro | 157.2 | MoonshotAI Kimi K2.5 | 148.7 | 8.5 |
| January 2026 | OpenAI GPT-5.2 Pro | 157.2 | MoonshotAI Kimi K2.5 | 148.7 | 8.5 |
| December 2025 | OpenAI GPT-5.2 Pro | 157.2 | DeepSeek V3.2 | 146.2 | 11.0 |
| November 2025 | Anthropic Claude Opus 4.5 | 151.8 | MoonshotAI Kimi K2 Thinking | 145.5 | 6.3 |
| October 2025 | OpenAI GPT-5 Pro | 151.2 | DeepSeek V3.2 Exp | 144.4 | 6.7 |
| September 2025 | OpenAI GPT-5 | 150.0 | DeepSeek V3.2 Exp | 144.4 | 5.6 |
| August 2025 | OpenAI GPT-5 | 150.0 | MoonshotAI Kimi K2 0711 | 141.3 | 8.8 |
| July 2025 | OpenAI o3 Pro | 147.4 | MoonshotAI Kimi K2 0711 | 141.3 | 6.2 |
| June 2025 | OpenAI o3 Pro | 147.4 | DeepSeek R1 | 138.6 | 8.8 |
| May 2025 | OpenAI o3 | 147.0 | DeepSeek R1 | 138.6 | 8.4 |
| April 2025 | OpenAI o3 | 147.0 | DeepSeek R1 | 138.6 | 8.4 |
| March 2025 | OpenAI o1 | 141.2 | DeepSeek R1 | 138.6 | 2.5 |
| February 2025 | OpenAI o1 | 141.2 | DeepSeek R1 | 138.6 | 2.5 |
| January 2025 | OpenAI o1 | 141.2 | DeepSeek R1 | 138.6 | 2.5 |
| December 2024 | OpenAI o1 | 141.2 | Qwen2.5 72B Instruct | 127.3 | 13.9 |
| November 2024 | OpenAI GPT-4 Turbo | 125.8 | Qwen2.5 72B Instruct | 127.3 | -1.5 |
| October 2024 | OpenAI GPT-4 Turbo | 125.8 | Qwen2.5 72B Instruct | 127.3 | -1.5 |
| September 2024 | OpenAI GPT-4 Turbo | 125.8 | Qwen2.5 72B Instruct | 127.3 | -1.5 |
| August 2024 | OpenAI GPT-4 Turbo | 125.8 | Meta Llama 3.1 70B Instruct | 124.8 | 1.1 |
| July 2024 | OpenAI GPT-4 Turbo | 125.8 | Meta Llama 3.1 70B Instruct | 124.8 | 1.1 |
| June 2024 | OpenAI GPT-4 Turbo | 125.8 | Mistral Mixtral 8x22B Instruct | 118.9 | 7.0 |
| May 2024 | OpenAI GPT-4 Turbo | 125.8 | Mistral Mixtral 8x22B Instruct | 118.9 | 7.0 |
| April 2024 | OpenAI GPT-4 Turbo | 125.8 | Mistral Mixtral 8x22B Instruct | 118.9 | 7.0 |
| March 2024 | OpenAI GPT-4 | 121.9 | No model yet | ||
| February 2024 | OpenAI GPT-4 | 121.9 | No model yet | ||
| January 2024 | OpenAI GPT-4 | 121.9 | No model yet | ||
| December 2023 | OpenAI GPT-4 | 121.9 | No model yet | ||
| November 2023 | OpenAI GPT-4 | 121.9 | No model yet | ||
| October 2023 | OpenAI GPT-4 | 121.9 | No model yet | ||
| September 2023 | OpenAI GPT-4 | 121.9 | No model yet | ||
| August 2023 | OpenAI GPT-4 | 121.9 | No model yet | ||
| July 2023 | OpenAI GPT-4 | 121.9 | No model yet | ||
| June 2023 | OpenAI GPT-4 | 121.9 | No model yet | ||
| May 2023 | OpenAI GPT-4 | 121.9 | No model yet |
Scores are each model's current Epoch Capabilities Index score, grouped by release month; they are not scores measured at release. Open weight means the weights are published on Hugging Face, as OpenRouter links them.